# Implementation of Shell Sort Algorithm in C2 min read

In this tutorial, we will write a C program to implement shell sort. Before that, you may go through the following topics in C.

## ShellSort Algorithm

Shell sort is an in-place comparison-based sorting algorithm and variation of Insertion sort. It is a better version of Insertion sort in comparison-based. It can compare the elements far apart whereas Insertion compares adjacent elements.

In shell sort, we make the array h-sorted for a large value of h. We keep reducing the value of h until it becomes 1. An array is said to be h-sorted if all sublists of every h’th element are sorted.

## Implementation of Shell Sort Algorithm in C

Question: C program to implement Shell sort using function.

Output:

`Enter the number of elements: 6Enter 6 Elements:5533561245418Array after sorting:3 18 54 55 124 356`

## Time Complexity of Shell Sort:

• Best case:  `0(nlogn)`
• Average case:  `0(n(logn)^2)`
• Worst case:  `0(n(logn)^2)`

### C Program to search an element in an array using Pointers

A separate function( search_function()) will be created where the array pointer will be declared and the searched element along with the size of an array …

### C Program to find the sum of the digits of a number using recursion function

This C program calculates the sum of digits of a given number using recursion. Here’s a concise explanation: Function Definition: sumDigits(int n) This function calculates …

### C program to find factorial of a number using Ternary operator with Recursion

Recursion refers to the function calling itself directly or in a cycle. Before we begin, you should have the knowledge of following in C Programming: …

### C Program to Add Two Numbers Using Call by Reference

The program takes the two numbers from the user and passes the reference to the function where the sum is calculated. You may go through …

### Find the output ab, cd, ef, g for the input a,b,c,d,e,f,g in Javascript and Python

In this tutorial, we will write a program to find a pairs of elements from an array such that for the input [a,b,c,d,e,f,g] we will …

### String Pattern Programs in C

In this tutorial, we will write various C pattern programs for String. Before that, you may go through the following topics in C. for loop …